Today’s ObjectiveTo be able

graph equations.

Linear Graphs:•An equation whose graph is

a straight line.•“Relationship is linear”

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Nonlinear Graph:

•An equation whose graph is NOT a straight line.

Random Data

02468101214

0 2 4 6 8 10

Steps to Graph:•Make Table •Plug in X to find Y •Draw Coordinate Plane

Today’s Objective:SWBAT find

the slope of a line.

SLOPE•Measures a line’s steepness.

Where do we see slope? • S taircase/Escalators• Wheelchair Ramps• S ki/S now/S kateboard

Parks Jumps• A rchitects, B uilders,

Contractors, Inspectors

SLOPE•The ratio of the vertical change to the horizontal change along a line.

SLOPE =RISE

(V ertical Change)RUN

(Horizontal Change)

Rise- Vertical (7-5 = 2) Run- Horizontal (3-2 = 1) Slope = Rise / Run = 2/1=2

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(2,5)

(3,7)Rise = 2

Run = 1

Today’s Objective:SWBAT write an equation in slope intercept form.

SLOPE-INTERCEPT FORM

y=mx+bSLOPE Y-

Intercept

What is the Y-INTERCEPT?y=mx+b “b” is the variable that

represents the y-intercept. The y-intercept is found by

looking at the graph to find where it crosses the y-axis.

What is the y-intercept?

The y-intecept is?

b=2

Write an Equation:

•m = -3•b = 5

Equation:

y=mx+by=-3x+5

What’s the Equation?

Find the slope and then find the y-intercept

The equation is…y= -½x+2m(slope)= -½

b(y-intercept)= 2